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1st millennium BC
Millennium between 1000 BC and 1 BC / From Wikipedia, the free encyclopedia
The 1st millennium BC, also known as the last millennium BC, was the period of time lasting from the years 1000 BC to 1 BC (10th to 1st centuries BC; in astronomy: JD 1356182.5 – 1721425.5[1]). It encompasses the Iron Age in the Old World and sees the transition from the Ancient Near East to classical antiquity.
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World population roughly doubled over the course of the millennium, from about 100 million to about 200–250 million.[2]